Sampling system and sampling method

Abstract

To provide a sampling system without any restriction in an arrangement position.SOLUTION: A sampling system samples a sample solution analyzed by an analyzer, and includes a sampling container for storing a sample solution, an introducing passage for introducing a sample solution into the sample container, a lead-out passage for leading out a sample solution, or a product liquid generated in the sampling container on the basis of the sample solution to an analyzer as an analysis liquid, a decompression device for reducing pressure in the sample container, a connection pipe connected to the sampling container and the decompression device, a gas introducing passage for introducing gas into the sampling container, an introducing valve for opening and closing the introducing passage, a lead-out valve for opening and closing the lead-out passage, a decompression valve for opening and closing the connection pipe, a gas introducing valve for opening and closing the gas introducing passage, and a control device for controlling operation of the introducing valve, the lead-out valve, the decompression valve, and the gas introducing valve.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a sampling system and a sampling method.

Background Art

[0002] The production process of functional chemical products includes a step of synthesizing a target compound and a step of treating the synthesized compound (hereinafter referred to as the "post-treatment step"). The post-treatment step includes an extraction and washing step, a concentration step, a crystallization step, a filtration step, a drying step, and a filling step. Among the production facilities for continuously performing the post-treatment step in the production process of functional chemical products, it is required to stably produce the same product. Therefore, the solution (hereinafter referred to as the "sample solution") handled in the post-treatment step is analyzed by an analyzer. The sample solution is continuously flowed into a path (for example, a pipe or a tank) provided in the production facility and is led to an analyzer through a sampling system connected to the path. That is, the sampling system leads the sample solution introduced (sampled) from the path to the analyzer as an analysis solution.

[0003] So far, technologies related to sampling systems for sampling sample solutions have been proposed (see, for example, Patent Document 1).

[0004] In the technology disclosed in Patent Document 1 (hereinafter referred to as the "conventional technology"), each post-treatment step of the product is independently executed. Sampling of the sample solution flowing in the path is manually performed by an operator after each treatment step is completed. That is, by manually opening an introduction valve through which the operator introduces the sample solution, the sample solution is introduced by gravity toward a container disposed below the introduction valve. Therefore, in the conventional technology, the sampling system including the introduction valve and the container must be disposed below the path (in the direction of gravity). Thus, in the conventional technology, the arrangement position of the sampling system in the production facility is limited.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] An object of the present invention is to provide a sampling system without restrictions on the installation location.

Means for Solving the Problems

[0007] A sampling system according to the present invention is a sampling system for sampling a sample solution to be analyzed by an analyzer, including a sampling container for storing the sample solution, an introduction flow path for introducing the sample solution into the sampling container, a derivation flow path for deriving the sample solution or a generated liquid generated inside the sampling container based on the sample solution as an analysis liquid to the analyzer, a decompression device for decompressing the inside of the sampling container, a connection pipe connected to the sampling container and the decompression device, a gas introduction flow path for introducing gas into the sampling container, an introduction valve for opening and closing the introduction flow path, a derivation valve for opening and closing the derivation flow path, a decompression valve for opening and closing the connection pipe, a gas introduction valve for opening and closing the gas introduction flow path, and a control device for controlling the operations of the introduction valve, the derivation valve, the decompression valve, and the gas introduction valve. The control device controls the operation of the decompression valve to decompress the inside of the sampling container, controls the operation of the introduction valve to introduce the sample solution into the decompressed inside of the sampling container, and controls the operations of the derivation valve and the gas introduction valve to derive the analysis liquid stored in the sampling container to the derivation flow path with the gas introduced into the sampling container.

Effects of the Invention

[0008] The present invention can provide a sampling system without restrictions on the installation location.

Brief Description of the Drawings

[0009]

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Embodiments for Carrying Out the Invention

[0010] Embodiments of a sampling system (hereinafter referred to as "this system") and a sampling method (hereinafter referred to as "this method") according to the present invention will be described below together with the drawings.

[0011] In the following description, the downward direction is the direction of gravity (the downward direction on the paper surface). The upward direction is the direction opposite to the downward direction (the upward direction on the paper surface). The left-right direction is the horizontal direction.

[0012] ●Configuration of This System● FIG. 1 is a schematic diagram showing an embodiment of this system. In the figure, this system 1 is indicated by a one-dot chain line. In the figure, a sample solution path 2, an analyzer 3, a gas path 4, a dissolution solvent tank 5, and a cleaning solvent tank 6 are indicated by broken lines. In the figure, a part of the outlet channel 14c, the discharge channel 14d, and the second gas introduction channel 14f are shown by a common line for convenience of explanation. In the figure, a part of the gas introduction channel 14e and the second gas introduction channel 14f are shown by a common line for convenience of explanation. In the figure, a part of the solvent introduction channel 14g for dissolution and the solvent introduction channel 14h for cleaning are shown by a common line for convenience of explanation.

[0013] This system 1 samples the sample solution from the sample solution path 2 through which a solution (hereinafter referred to as the "sample solution") handled in a post-treatment process (for example, extraction and washing, concentration, crystallization, etc.) in the production process of chemical products flows. This system 1 derives the introduced sample solution or the product solution generated based on the sample solution as an analysis solution to the analyzer 3. The details of the sample solution path 2 and the analyzer 3 will be described later.

[0014] Here, the solution is a general term for the sample solution, the product solution, the analysis solution, the solvent for dissolution, and the solvent for cleaning. The details of each solution will be described later.

[0015] This system 1 includes a sampling container 11, a control device 12, a decompression device 13, a connecting pipe 14a, an introduction channel 14b, an outlet channel 14c, a discharge channel 14d, a gas introduction channel 14e, a second gas introduction channel 14f, a solvent introduction channel 14g for dissolution, a solvent introduction channel 14h for cleaning, a gas discharge channel 14i, a decompression valve 15a, an introduction valve 15b, an outlet valve 15c, a discharge valve 15d, a gas introduction valve 15e, a second gas introduction valve 15f, a solvent introduction valve 15g for dissolution, a solvent introduction valve 15h for cleaning, and a gas discharge valve 15i.

[0016] Here, the flow path is a general term for the connection pipe 14a, the introduction flow path 14b, the derivation flow path 14c, the discharge flow path 14d, the gas introduction flow path 14e, the second gas introduction flow path 14f, the dissolution solvent introduction flow path 14g, the cleaning solvent introduction flow path 14h, and the gas discharge flow path 14i. The on-off valve is a general term for the pressure reducing valve 15a, the introduction valve 15b, the derivation valve 15c, the discharge valve 15d, the gas introduction valve 15e, the second gas introduction valve 15f, the dissolution solvent introduction valve 15g, the cleaning solvent introduction valve 15h, and the gas discharge valve 15i. Details of each flow path and each on-off valve will be described later.

[0017] The sample solution path 2 is a pipe through which the sample solution flows. The sample solution path 2 is connected to the sampling container 11 via the introduction flow path 14b. That is, the sample solution is introduced into the sampling container 11 from the sample solution path 2 via the introduction flow path 14b. Details of the sampling container 11 will be described later.

[0018] Note that the sample solution path in the present invention is not limited to a pipe through which the sample solution flows. That is, for example, the sample solution path may be a tank for storing the sample solution.

[0019] The analyzer 3 qualitatively and quantitatively measures the composition, properties, structure, state, etc. of the compounds contained in the analysis solution. The analyzer 3 is a high performance liquid chromatograph (HPLC).

[0020] Note that the analyzer in the present invention is not limited to a high performance liquid chromatograph. That is, for example, the analyzer may be a liquid chromatograph (LC), a liquid chromatograph mass spectrometer (LC-MS), a gas chromatograph (GC), a gas chromatograph mass spectrometer (GC-MS), etc.

[0021] The gas path 4 is a pressurized tank for storing gas (gaseous). The gas path 4 is connected to the sampling container 11 via the gas introduction flow path 14e or the second gas introduction flow path 14f. That is, the gas is introduced into the sampling container 11 via the gas introduction flow path 14e or the second gas introduction flow path 14f.

[0022] The gas is a high-pressure gas in which the gas is compressed. The gas is nitrogen gas.

[0023] Note that the gas in the present invention is not limited to nitrogen gas. That is, for example, the gas may be helium gas, neon gas, argon gas, etc.

[0024] The solvent tank 5 for dissolution is a tank for storing the solvent for dissolution. The solvent tank 5 for dissolution is connected to the sampling container 11 via the solvent introduction flow path 14g for dissolution. That is, the solvent for dissolution is introduced into the sampling container 11 from the solvent tank 5 for dissolution via the solvent introduction flow path 14g for dissolution.

[0025] The solvent tank 6 for cleaning is a tank for storing the solvent for cleaning. The solvent tank 6 for cleaning is connected to the sampling container 11 via the solvent introduction flow path 14h for cleaning. That is, the solvent for cleaning is introduced into the sampling container 11 from the solvent tank 6 for cleaning via the solvent introduction flow path 14h for cleaning.

[0026] The solvent for cleaning is a solvent for cleaning the sampling container 11. The solvent for cleaning is acetone.

[0027] Note that the solvent for cleaning in the present invention is not limited to acetone. That is, for example, the solvent for dissolution may be ethanol, distilled water, etc.

[0028] The sampling container 11 is a container for storing a solution. That is, the sampling container 11 stores the sample solution introduced from the sample solution path 2. The sampling container 11 includes a separation filter 111 and a bubbling filter 112.

[0029] The separation filter 111 is a filter that separates the liquid and solid contained in the sample solution. The liquid passes through the separation filter 111. The solid does not pass through the separation filter 111. That is, the solid is retained by the separation filter 111.

[0030] The bubbling filter 112 is a filter through which the gas from the second gas introduction flow path 14f passes. The bubbling filter 112 is disposed below the separation filter 111.

[0031] The control device 12 controls the operation of the on-off valve. The operation of the on-off valve is valve opening and valve closing.

[0032] The control device 12 controls the operation of the decompression device 13. The operation of the decompression device 13 is the start of air suction and the stop of air suction.

[0033] The decompression device 13 sucks the air inside the sampling container 11 through the connection pipe 14a. That is, the decompression device 13 decompresses the inside of the sampling container 11. The operation of the decompression device 13 is controlled by the control device 12. That is, the decompression device 13 is controlled by the control device 12 to start or stop the suction of the air inside the sampling container 11. The decompression device 13 is a vacuum pump.

[0034] The connection pipe 14a is a pipe through which the air inside the sampling container 11 passes. The connection pipe 14a is connected to the sampling container 11 and the decompression device 13. The connection pipe 14a is disposed between the sampling container 11 and the decompression device 13.

[0035] The introduction flow path 14b is a pipe through which the sample solution introduced from the sample solution path 2 into the sampling container 11 passes. That is, the introduction flow path 14b introduces the sample solution from the sample solution path 2 into the sampling container 11. The introduction flow path 14b is connected to the sample solution path 2 and the sampling container 11. The introduction flow path 14b is disposed between the sample solution path 2 and the sampling container 11.

[0036] The derivation flow path 14c is a pipe through which the analysis solution derived from the sampling container 11 to the analyzer 3 passes. That is, the derivation flow path 14c derives, as the analysis solution, the sample solution or the generated solution generated inside the sampling container 11 based on the sample solution, from the sampling container 11 to the analyzer 3. The derivation flow path 14c is connected to the sampling container 11 and the analyzer 3. The derivation flow path 14c is disposed between the sampling container 11 and the analyzer 3.

[0037] The discharge flow path 14d is a pipe through which the liquid separated by the separation filter 111 and discharged from the sampling container 11 to the discharge path (not shown) and the cleaning solvent introduced into the sampling container 11 (hereinafter referred to as "waste liquid") pass. That is, the discharge flow path 14d discharges the waste liquid from the sampling container 11 to the discharge path. The discharge flow path 14d is connected to the sampling container 11 and the discharge path. The discharge flow path 14d is disposed between the sampling container 11 and the discharge path.

[0038] The discharge path is a tank for storing the waste liquid.

[0039] Note that the discharge path in the present invention is not limited to a tank for storing the waste liquid. That is, for example, the discharge path may be a pipe through which the waste liquid flows.

[0040] The gas introduction flow path 14e is a pipe through which gas passes to be introduced from the gas path 4 into the sampling container 11. That is, the gas introduction flow path 14e introduces gas from the gas path 4 into the sampling container 11. The gas introduction flow path 14e is connected to the sampling container 11 and the gas path 4. The gas introduction flow path 14e is disposed between the sampling container 11 and the gas path 4.

[0041] Here, the gas introduction flow path 14e is connected to the upper end of the sampling container 11. That is, the gas is introduced into the inside of the sampling container 11 from above the liquid surface of the solution stored in the sampling container 11 via the gas introduction flow path 14e. The introduced gas draws (discharges) the solution to the outlet flow path 14c or the discharge flow path 14d by the gas pressure.

[0042] The gas introduction channel in the present invention does not have to be connected to the upper end of the sampling container. That is, for example, the gas introduction channel in the present invention may be connected to the sampling container at a height above the liquid level of the solution and from the side of the sampling container.

[0043] The second gas introduction flow path 14f is a pipe through which gas passes to be introduced from the gas path 4 into the sampling container 11. That is, the second gas introduction flow path 14f introduces gas from the gas path 4 into the sampling container 11. The second gas introduction flow path 14f is connected to the sampling container 11 and the gas path 4. The second gas introduction flow path 14f is disposed between the sampling container 11 and the gas path 4.

[0044] Here, the second gas introduction channel 14f is connected to the lower end of the sampling container 11. That is, the gas is introduced into the sampling container 11 from below the liquid level of the solution stored in the sampling container 11 through the second gas introduction channel 14f. That is, the gas from the second gas introduction channel 14f is introduced into the sampling container 11 from below the separation filter 111. The bubbling filter 112 is disposed below the separation filter 111. The gas from the second gas introduction channel 14f is introduced into the sampling container 11 from below the bubbling filter 112. The introduced gas generates bubbles (bubbling) in the solution. The size of the diameter of the bubbles is larger than the size of the diameter of the holes constituting the bubbling filter 112. That is, when the bubbles pass through the bubbling filter 112, the size of the diameter of the bubbles becomes smaller than the size of the diameter of the holes constituting the bubbling filter 112. The size of the diameter of the bubbles that have passed through the bubbling filter 112 is larger than the size of the diameter of the holes constituting the separation filter 111. That is, when the bubbles that have passed through the bubbling filter 112 pass through the separation filter 111, the size of the diameter of the bubbles becomes smaller than the size of the diameter of the holes constituting the separation filter 111.

[0045] Note that the second gas introduction channel in the present invention does not necessarily have to be connected to the lower end of the sampling container. That is, for example, the second gas introduction channel in the present invention may be connected to the sampling container from a height below the bubbling filter and from the side surface of the sampling container.

[0046] The dissolution solvent introduction channel 14g is a pipe through which the dissolution solvent introduced from the dissolution solvent tank 5 into the sampling container 11 passes. That is, the dissolution solvent introduction channel 14g introduces the dissolution solvent from the dissolution solvent tank 5 into the sampling container 11. The dissolution solvent introduction channel 14g is connected to the sampling container 11 and the dissolution solvent tank 5. The dissolution solvent introduction channel 14g is disposed between the sampling container 11 and the dissolution solvent tank 5.

[0047] The cleaning solvent introduction flow path 14h is a pipe through which the cleaning solvent introduced from the cleaning solvent tank 6 into the inside of the sampling container 11 passes. That is, the cleaning solvent introduction flow path 14h introduces the cleaning solvent from the cleaning solvent tank 6 into the inside of the sampling container 11. The cleaning solvent introduction flow path 14h is connected to the sampling container 11 and the cleaning solvent tank 6. The cleaning solvent introduction flow path 14h is disposed between the sampling container 11 and the cleaning solvent tank 6.

[0048] The gas discharge flow path 14i is a pipe through which the gas introduced from the second gas introduction flow path 14f into the inside of the sampling container 11 and discharged from the sampling container 11 to the gas discharge path (not shown) passes. That is, the gas discharge flow path 14i discharges the gas from the sampling container 11 to the gas discharge path. The gas discharge flow path 14i is connected to the sampling container 11 and the gas discharge path. The gas discharge flow path 14i is disposed between the sampling container 11 and the gas discharge path.

[0049] The gas discharge path is a tank for storing gas.

[0050] Note that the gas discharge path in the present invention is not limited to a tank for storing gas. That is, for example, the gas discharge path may be a pipe through which gas flows.

[0051] The pressure reducing valve 15a is an on-off valve for opening and closing the connection pipe 14a. The pressure reducing valve 15a is disposed on the connection pipe 14a. The operation of the pressure reducing valve 15a is controlled by the control device 12. That is, the pressure reducing valve 15a is controlled by the control device 12 to open or close the valve.

[0052] The introduction valve 15b is an on-off valve for opening and closing the introduction flow path 14b. The introduction valve 15b is disposed on the introduction flow path 14b. The operation of the introduction valve 15b is controlled by the control device 12. That is, the introduction valve 15b is controlled by the control device 12 to open or close the valve.

[0053] The extraction valve 15c is an on-off valve that opens and closes the extraction flow path 14c. The extraction valve 15c is arranged in the extraction flow path 14c. The operation of the extraction valve 15c is controlled by the control device 12. That is, the extraction valve 15c is controlled by the control device 12 to open or close.

[0054] The discharge valve 15d is an on-off valve that opens and closes the discharge flow path 14d. The discharge valve 15d is arranged in the discharge flow path 14d. The operation of the discharge valve 15d is controlled by the control device 12. That is, the discharge valve 15d is controlled by the control device 12 to open or close.

[0055] The gas introduction valve 15e is an on-off valve that opens and closes the gas introduction flow path 14e. The gas introduction valve 15e is arranged in the gas introduction flow path 14e. The operation of the gas introduction valve 15e is controlled by the control device 12. That is, the gas introduction valve 15e is controlled by the control device 12 to open or close.

[0056] The second gas introduction valve 15f is an on-off valve that opens and closes the second gas introduction flow path 14f. The second gas introduction valve 15f is arranged in the second gas introduction flow path 14f. The operation of the second gas introduction valve 15f is controlled by the control device 12. That is, the second gas introduction valve 15f is controlled by the control device 12 to open or close.

[0057] The dissolution solvent introduction valve 15g is an on-off valve that opens and closes the dissolution solvent introduction flow path 14g. The dissolution solvent introduction valve 15g is arranged in the dissolution solvent introduction flow path 14g. The operation of the dissolution solvent introduction valve 15g is controlled by the control device 12. That is, the dissolution solvent introduction valve 15g is controlled by the control device 12 to open or close.

[0058] The cleaning solvent introduction valve 15h is an on-off valve that opens and closes the cleaning solvent introduction flow path 14h. The cleaning solvent introduction valve 15h is arranged in the cleaning solvent introduction flow path 14h. The operation of the cleaning solvent introduction valve 15h is controlled by the control device 12. That is, the cleaning solvent introduction valve 15h is controlled by the control device 12 to open or close.

[0059] The gas discharge valve 15i is an on-off valve that opens and closes the gas discharge flow path 14i. The gas discharge valve 15i is disposed in the gas discharge flow path 14i. The operation of the gas discharge valve 15i is controlled by the control device 12. That is, the gas discharge valve 15i is controlled by the control device 12 to open or close.

[0060] ●Derivation process of the sample solution● FIG. 2 is a schematic diagram showing the process in which the sample solution used in the present system 1 is derived to the analyzer 3.

[0061] In FIG. (a), when the sample solution contains only liquid, it shows that the liquid (analysis liquid) is derived to the analyzer 3.

[0062] In FIG. (b), when the sample solution contains liquid and solid, it shows that the solid is filtered from the sample solution. In FIG. (b), it shows that the filtered solid is mixed with the solvent for dissolution. In FIG. (b), it shows that the generated liquid (analysis liquid) is generated by the same mixing. In FIG. (b), it shows that the generated liquid (analysis liquid) is derived to the analyzer 3.

[0063] The sample solution is a solution flowing through the sample solution path 2. The sample solution contains only liquid or liquid and solid (slurry solution). The sample solution is introduced into the inside of the sampling container 11 through the introduction flow path 14b. The sample solution introduced into the inside of the sampling container 11 is stored in the sampling container 11.

[0064] The solvent for dissolution is a solvent that dissolves the solid contained in the sample solution. The solvent for dissolution is dimethylformamide.

[0065] Note that the solvent for dissolution in the present invention is not limited to dimethylformamide. That is, for example, the solvent for dissolution may be dichloromethane, chlorobenzene, toluene, ethyl acetate, acetone, ethanol, ether, chloroform, dimethyl sulfoxide, or the like.

[0066] The generated solution is a solution formed by dissolving the solid contained in the sample solution in the solvent for dissolution.

[0067] The analysis solution is the solution analyzed by the analyzer 3.

[0068] Here, when the sample solution contains only liquid, the sample solution introduced into the sampling container 11 passes through the separation filter 111. That is, the liquid passes through the separation filter 111. The liquid that has passed through the separation filter 111 is led to the analyzer 3. That is, when the sample solution contains only liquid, the analysis solution is the sample solution. That is, the liquid (sample solution) is analyzed by the analyzer 3 as the analysis solution.

[0069] When the sample solution contains liquid and solid, the sample solution introduced into the sampling container 11 is filtered by the separation filter 111. That is, the sample solution is separated by the separation filter 111 into liquid and solid. The liquid separated by the separation filter 111 is discharged into the discharge flow path 14d. The solid separated by the separation filter 111 is dissolved in the solvent for dissolution. As a result, the generated solution is generated. The generated generated solution is led to the analyzer 3. That is, when the sample solution contains liquid and solid, the analysis solution is the generated solution formed by dissolving the solid separated by the separation filter 111 in the solvent for dissolution. That is, the generated solution is analyzed by the analyzer 3 as the analysis solution.

[0070] ●Operation of this system● The operation of this system 1 will be described below.

[0071] ●When the sample solution contains liquid and solid (slurry solution) The following description is an example when the sample solution contains liquid and solid (slurry solution), and this system 1 introduces (samples) the sample solution from the sample solution path 2 and leads it to the analyzer 3.

[0072] In the following description, each on-off valve at the start of the operation of the present system 1 is in the closed state.

[0073] The present system 1 operates in the order shown in Fig. 3-20.

[0074] In Fig. 3-20, the sample solution path 2 and the analyzer 3 are indicated by dashed lines.

[0075] In Fig. 3-20, the range including the pressure reducing device 13 and each on-off valve controlled by the control device 12 is indicated by a one-dot chain line.

[0076] In Fig. 3-20, the control of the pressure reducing device 13 and each on-off valve by the control device 12 is indicated by double-headed arrows.

[0077] In Fig. 3-20, among each flow path, the flow path through which a solution, air, or gas (hereinafter referred to as "medium") is flowing is indicated by a thick line. On the other hand, the flow path through which the medium is not flowing is indicated by a thin line.

[0078] In Fig. 3-20, the advancing direction of air or gas among the media is indicated by a white arrow. On the other hand, the advancing direction of the solution among the media is indicated by a black arrow.

[0079] In Fig. 3-20, among each on-off valve, the open on-off valve is indicated by being white. On the other hand, the closed on-off valve is indicated by being black.

[0080] In Fig. 3-20, the illustration of the gas path 4, the dissolution solvent tank 5, and the cleaning solvent tank 6 is omitted for convenience of explanation. That is, in the following description, Fig. 1 is referred to as appropriate.

[0081] In Fig. 4-12, the solid contained in the sample solution is indicated by a black hexagon.

[0082] In Figs. 9 and 12, the solid dissolved in the dissolution solvent is indicated by a dashed hexagon.

[0083] Figure 3 is a schematic diagram showing the state where the inside of the sampling container 11 is under reduced pressure. This figure shows that the control device 12 controls the operation of the pressure reducing valve 15a. This figure shows that the pressure reducing valve 15a is open. This figure shows that the pressure reducing device 13 sucks the air inside the sampling container 11.

[0084] First, the control device 12 controls the operation of the pressure reducing valve 15a.

[0085] Next, the pressure reducing valve 15a opens.

[0086] Next, the control device 12 controls the operation of the pressure reducing device 13.

[0087] Next, the pressure reducing device 13 starts to suck air. That is, the pressure reducing device 13 sucks the air inside the sampling container 11 through the connection pipe 14a. In other words, the inside of the sampling container 11 is under reduced pressure.

[0088] Next, the control device 12 controls the operation of the pressure reducing device 13.

[0089] Next, the pressure reducing device 13 stops sucking air.

[0090] Next, the control device 12 controls the operation of the pressure reducing valve 15a.

[0091] Next, the pressure reducing valve 15a closes.

[0092] Figure 4 is a schematic diagram showing the state where the sample solution is introduced into the sampling container 11. This figure shows that the control device 12 controls the operation of the introduction valve 15b. This figure shows that the introduction valve 15b is open. This figure shows that the sample solution is stored in the sampling container 11.

[0093] Next, the control device 12 controls the operation of the introduction valve 15b.

[0094] Next, the introduction valve 15b opens. At this time, the sample solution is introduced from the sample solution path 2 into the introduction flow path 14b.

[0095] Next, the introduction flow path 14b introduces the sample solution into the inside of the sampling container 11.

[0096] Next, the sampling container 11 stores the introduced sample solution.

[0097] Next, the control device 12 controls the operation of the introduction valve 15b.

[0098] Next, the introduction valve 15b closes. At this time, the inside of the sampling container 11 is filled with the sample solution.

[0099] FIG. 5 is a schematic diagram showing a state in which the sample solution is stored (filled) in the sampling container 11. This figure shows that each on-off valve is closed. This figure shows that a part of the solid contained in the sample solution is floating in the liquid contained in the sample solution. This figure shows that a part of the solid is held by the separation filter 111.

[0100] FIG. 6 is a schematic diagram showing a state in which the sample solution is discharged by the gas introduced into the inside of the sampling container 11. This figure shows that the control device 12 controls the operations of the discharge valve 15d and the gas introduction valve 15e. This figure shows that the discharge valve 15d and the gas introduction valve 15e are open.

[0101] Next, the control device 12 controls the operations of the discharge valve 15d and the gas introduction valve 15e.

[0102] Next, the discharge valve 15d and the gas introduction valve 15e are opened. At this time, the gas is introduced from the gas path 4 into the gas introduction flow path 14e.

[0103] Here, the timing at which the discharge valve 15d opens is the same as, or earlier than, the timing at which the gas introduction valve 15e opens.

[0104] Next, the gas introduction flow path 14e introduces the gas into the inside of the sampling container 11.

[0105] Next, the gas introduced into the inside of the sampling container 11 discharges the sample solution (liquid) to the discharge flow path 14d by the pressure of the gas. At this time, the liquid passes through the separation filter 111 and the bubbling filter 112. The solid is retained by the separation filter 111. That is, the solid is separated from the liquid by the separation filter 111.

[0106] Next, the discharge flow path 14d discharges the liquid that has passed through the separation filter 111 as waste liquid from the sampling container 11 to the discharge path.

[0107] Next, the control device 12 controls the operations of the discharge valve 15d and the gas introduction valve 15e.

[0108] Next, the discharge valve 15d and the gas introduction valve 15e are closed.

[0109] FIG. 7 is a schematic diagram showing a state in which the sample solution is filtered. The figure shows that each on-off valve is closed. The figure shows that the solid is retained by the separation filter 111.

[0110] FIG. 8 is a schematic diagram showing a state in which the inside of the sampling container 11 is depressurized with the solid contained in the sample solution retained by the separation filter 111. The figure shows that the control device 12 controls the operation of the pressure reducing valve 15a. The figure shows that the pressure reducing valve 15a is open. The figure shows that the pressure reducing device 13 is sucking the air inside the sampling container 11.

[0111] Next, the control device 12 controls the operation of the pressure reducing valve 15a.

[0112] Next, the pressure reducing valve 15a opens.

[0113] Next, the control device 12 controls the operation of the pressure reducing device 13.

[0114] Next, the pressure reducing device 13 starts sucking air. That is, the pressure reducing device 13 sucks the air inside the sampling container 11 through the connecting pipe 14a. In other words, the inside of the sampling container 11 is depressurized.

[0115] Next, the control device 12 controls the operation of the pressure reducing device 13.

[0116] Next, the pressure reducing device 13 stops sucking air.

[0117] Next, the control device 12 controls the operation of the pressure reducing valve 15a.

[0118] Next, the pressure reducing valve 15a closes.

[0119] Figure 9 is a schematic diagram showing a state in which a solvent for dissolving a solid is introduced into the sampling container 11. The figure shows that the control device 12 controls the operation of the solvent introduction valve 15g for dissolution. The figure shows that the solvent introduction valve 15g for dissolution is open. The figure shows a state in which a part of the solid is dissolved in the solvent for dissolution.

[0120] Next, the control device 12 controls the operation of the solvent introduction valve 15g for dissolution.

[0121] Next, the dissolution solvent introduction valve 15g is opened. At this time, the dissolution solvent is introduced from the dissolution solvent tank 5 into the dissolution solvent introduction flow path 14g.

[0122] Next, the dissolution solvent introduction flow path 14g introduces the dissolution solvent into the inside of the sampling container 11.

[0123] Next, the sampling container 11 stores the introduced dissolution solvent. At this time, a part of the solid is dissolved in the introduced dissolution solvent.

[0124] Next, the control device 12 controls the operation of the introduction valve 15b.

[0125] Next, the introduction valve 15b is closed. At this time, the inside of the sampling container 11 is filled with the dissolution solvent in which a part of the solid is dissolved.

[0126] FIG. 10 is a schematic diagram showing a state in which the sampling container 11 is filled with the dissolution solvent and a part of the solid is not dissolved in the dissolution solvent. This figure shows that each on-off valve is closed. This figure shows that the solid is held by the separation filter 111.

[0127] FIG. 11 is a schematic diagram showing a state in which bubbles are generated by the gas introduced into the sampling container 11. In the figure, the circle shown between the lower end of the sampling container 11 and the bubbling filter 112 indicates the bubbles generated in the dissolution solvent. In the figure, the circle shown between the bubbling filter 112 and the separation filter 111 indicates the bubbles that have passed through the bubbling filter 112. This figure is a schematic diagram showing a state in which the generated bubbles are passing through the bubbling filter 112. This figure shows that the control device 12 controls the operations of the second gas introduction valve 15f and the gas discharge valve 15i. The figure shows that the second gas introduction valve 15f and the gas discharge valve 15i are open. The figure shows that the solid is held by the separation filter 111.

[0128] Next, the control device 12 controls the operations of the second gas introduction valve 15f and the gas discharge valve 15i.

[0129] Next, the second gas introduction valve 15f and the gas discharge valve 15i open. At this time, the gas is introduced from the gas path 4 into the second gas introduction flow path 14f.

[0130] Here, the timing at which the gas discharge valve 15i opens is the same as or earlier than the timing at which the second gas introduction valve 15f opens.

[0131] Next, the second gas introduction flow path 14f introduces the gas into the inside of the sampling container 11. That is, the gas is introduced into the dissolution solvent stored inside the sampling container 11.

[0132] Next, the gas generates bubbles (bubbling) in the dissolution solvent.

[0133] Next, the generated bubbles pass through the bubbling filter 112. At this time, the diameter of the bubbles becomes smaller than the diameter of the holes constituting the bubbling filter 112.

[0134] FIG. 12 is a schematic diagram showing a state in which the bubbles that have passed through the separation filter 111 are stirring the dissolution solvent. In the figure, the circle shown between the lower end of the sampling container 11 and the bubbling filter 112 indicates the bubbles generated in the dissolution solvent. In the figure, the circle shown between the bubbling filter 112 and the separation filter 111 indicates the bubbles that have passed through the bubbling filter 112. In the figure, the circle shown between the separation filter 111 and the upper end of the sampling container 11 indicates the bubbles that have passed through the separation filter 111. This figure shows the state in which the bubbles that have passed through the bubbling filter 112 are passing through the separation filter 111. This figure shows the state in which the solid is dissolved in the solvent for dissolution. This figure shows that the control device 12 controls the operations of the second gas introduction valve 15f and the gas discharge valve 15i. This figure shows that the second gas introduction valve 15f and the gas discharge valve 15i are open.

[0135] Next, the bubbles that have passed through the bubbling filter 112 pass through the separation filter 111. At this time, the size of the bubble diameter becomes smaller than the size of the hole diameter that constitutes the separation filter 111.

[0136] Next, the bubbles that have passed through the separation filter 111 stir the solvent for dissolution. As a result, the solid is dissolved in the solvent for dissolution.

[0137] Here, the bubbles that have passed through the separation filter 111 rise toward the upper end of the sampling container 11. The bubbles that have risen to the upper end of the sampling container 11 are discharged as gas into the gas discharge channel 14i. The gas discharge channel 14i discharges the gas from the sampling container 11 to the gas discharge path.

[0138] Next, the control device 12 controls the operations of the second gas introduction valve 15f and the gas discharge valve 15i.

[0139] Next, the second gas introduction valve 15f and the gas discharge valve 15i are closed. At this time, the solid is dissolved in the solvent for dissolution. That is, the product solution is generated.

[0140] Figure 13 is a schematic diagram showing the state in which the product solution generated by dissolving the solid in the solvent for dissolution is stored in the sampling container 11. This figure shows that each on-off valve is closed.

[0141] FIG. 14 is a schematic diagram showing a state in which the generated liquid is discharged by the gas introduced into the sampling container 11. This figure shows that the control device 12 controls the operations of the discharge valve 15c and the gas introduction valve 15e. This figure shows that the discharge valve 15c and the gas introduction valve 15e are open.

[0142] Next, the control device 12 controls the operations of the discharge valve 15c and the gas introduction valve 15e.

[0143] Next, the discharge valve 15c and the gas introduction valve 15e open. At this time, the gas is introduced from the gas path 4 into the gas introduction flow path 14e.

[0144] Here, the timing at which the discharge valve 15c opens is the same as or earlier than the timing at which the gas introduction valve 15e opens.

[0145] Next, the gas introduction flow path 14e introduces the gas into the sampling container 11.

[0146] Next, the gas introduced into the sampling container 11 discharges the generated liquid through the discharge flow path 14c by the pressure of the gas. At this time, the generated liquid passes through the separation filter 111 and the bubbling filter 112.

[0147] Next, the discharge flow path 14c discharges the generated liquid as an analysis liquid to the analyzer 3.

[0148] Next, the control device 12 controls the operations of the discharge valve 15c and the gas introduction valve 15e.

[0149] Next, the discharge valve 15c and the gas introduction valve 15e close.

[0150] FIG. 15 is a schematic diagram showing a state in which all the generated liquid stored in the sampling container 11 has been discharged. This figure shows that each on-off valve is closed.

[0151] Figure 16 is a schematic diagram showing the state where the inside of the sampling container 11 is under reduced pressure. This figure shows that the control device 12 controls the operation of the pressure reducing valve 15a. This figure shows that the pressure reducing valve 15a is open. This figure shows that the pressure reducing device 13 sucks the air inside the sampling container 11.

[0152] Next, the control device 12 controls the operation of the pressure reducing valve 15a.

[0153] Next, the pressure reducing valve 15a opens.

[0154] Next, the control device 12 controls the operation of the pressure reducing device 13.

[0155] Next, the pressure reducing device 13 starts sucking air. That is, the pressure reducing device 13 sucks the air inside the sampling container 11 through the connection pipe 14a. In other words, the inside of the sampling container 11 is under reduced pressure.

[0156] Next, the control device 12 controls the operation of the pressure reducing device 13.

[0157] Next, the pressure reducing device 13 stops sucking air.

[0158] Next, the control device 12 controls the operation of the pressure reducing valve 15a.

[0159] Next, the pressure reducing valve 15a closes.

[0160] Figure 17 is a schematic diagram showing the state where the cleaning solvent for cleaning the sampling container 11 is introduced into the sampling container 11. This figure shows that the control device 12 controls the operation of the solvent introduction valve 15g for dissolution. The figure shows that the cleaning solvent introduction valve 15h is open.

[0161] Next, the control device 12 controls the operation of the cleaning solvent introduction valve 15h.

[0162] Next, the cleaning solvent introduction valve 15h opens. At this time, the cleaning solvent is introduced from the cleaning solvent tank 6 into the cleaning solvent introduction flow path 14h.

[0163] Next, the cleaning solvent introduction flow path 14h introduces the cleaning solvent into the inside of the sampling container 11.

[0164] Next, the sampling container 11 stores the introduced cleaning solvent. At this time, the sampling container 11 is cleaned by the introduced cleaning solvent.

[0165] Next, the control device 12 controls the operation of the cleaning solvent introduction valve 15h.

[0166] Next, the cleaning solvent introduction valve 15h closes. At this time, the inside of the sampling container 11 is filled with the cleaning solvent.

[0167] Figure 18 is a schematic diagram showing a state in which the cleaning solvent is stored (filled) in the sampling container 11. The figure shows that each on-off valve is closed.

[0168] Figure 19 is a schematic diagram showing a state in which the cleaning solvent is discharged by the gas introduced into the sampling container 11. The figure shows that the control device 12 controls the operations of the discharge valve 15d and the gas introduction valve 15e. The figure shows that the discharge valve 15d and the gas introduction valve 15e are open.

[0169] Next, the control device 12 controls the operations of the discharge valve 15d and the gas introduction valve 15e.

[0170] Next, the exhaust valve 15d and the gas inlet valve 15e are opened. At this time, the gas is introduced from the gas path 4 into the gas inlet passage 14e.

[0171] Here, the exhaust valve 15d opens simultaneously with the gas introduction valve 15e or before the gas introduction valve 15e opens.

[0172] Next, the gas introduction passage 14e introduces the gas into the inside of the sampling container 11.

[0173] Next, the gas introduced into the sampling container 11 discharges the cleaning solvent to the discharge flow path 14d under the pressure of the gas.

[0174] Next, the discharge flow path 14d discharges the washing solvent as waste liquid from the sampling container 11 to the discharge path.

[0175] The controller 12 then controls the operation of the exhaust valve 15d and the gas inlet valve 15e.

[0176] Next, the exhaust valve 15d and the gas introduction valve 15e are closed.

[0177] FIG. 20 is a schematic diagram showing a state in which all of the washing solvent stored in the sampling container 11 has been discharged. This figure shows that each on-off valve is closed.

[0178] Next, the operation of the system 1 moves (returns) to the operation shown in Fig. 3. Thereafter, the system 1 repeats the operation shown in Fig. 3-20.

[0179] When the sample solution contains only liquid The following description is an example in which the sample solution contains only liquid, and the system 1 introduces (samples) the sample solution from the sample solution path 2 and delivers it to the analyzer 3.

[0180] In the following description, the description of the operations common to those of the present system 1 when the aforementioned sample solution contains a liquid and a solid (slurry solution) is omitted.

[0181] This system 1 operates in the order of FIGS. 3-5, 14, and 15.

[0182] When the sample solution is only a liquid, the separation filter 111 and the bubbling filter 112 of the sampling container 11 shown in FIGS. 3-5, 14, and 15 are not used for guiding the sample solution to the analyzer 3. In other words, when the sample solution is only a liquid, the sampling container in the present invention may not include a separation filter and a bubbling filter.

[0183] Also, when the sample solution is only a liquid, the solid shown by the black hexagon in FIGS. 4 and 5 does not exist.

[0184] Return to FIG. 3. First, the control device 12 controls the operation of the pressure reducing valve 15a.

[0185] Next, the pressure reducing valve 15a opens.

[0186] Next, the control device 12 controls the operation of the pressure reducing device 13.

[0187] Next, the pressure reducing device 13 starts sucking air. That is, the pressure reducing device 13 sucks the air inside the sampling container 11 through the connecting pipe 14a. In other words, the inside of the sampling container 11 is depressurized.

[0188] Next, the control device 12 controls the operation of the pressure reducing device 13.

[0189] Next, the pressure reducing device 13 stops sucking air.

[0190] Next, the control device 12 controls the operation of the pressure reducing valve 15a.

[0191] Next, the pressure reducing valve 15a closes.

[0192] Proceed to FIGS. 4 and 5.

[0193] Next, the control device 12 controls the operation of the introduction valve 15b.

[0194] Next, the introduction valve 15b opens. At this time, the sample solution is introduced from the sample solution path 2 into the introduction flow path 14b.

[0195] Next, the introduction flow path 14b introduces the sample solution into the inside of the sampling container 11.

[0196] Next, the sampling container 11 stores the introduced sample solution.

[0197] Next, the control device 12 controls the operation of the introduction valve 15b.

[0198] Next, the introduction valve 15b closes. At this time, the inside of the sampling container 11 is filled with the sample solution.

[0199] Proceed to FIGS. 14 and 15. Next, the control device 12 controls the operations of the discharge valve 15c and the gas introduction valve 15e.

[0200] Next, the discharge valve 15c and the gas introduction valve 15e open. At this time, the gas is introduced from the gas path 4 into the gas introduction flow path 14e.

[0201] Here, the timing at which the discharge valve 15c opens is the same as or earlier than the timing at which the gas introduction valve 15e opens.

[0202] Next, the gas introduction flow path 14e introduces the gas into the inside of the sampling container 11.

[0203] Next, the gas introduced into the sampling container 11 draws the sample solution (liquid) into the outlet flow path 14c by the pressure of the gas. At this time, the sample solution (liquid) passes through the separation filter 111 and the bubbling filter 112.

[0204] Next, the output flow path 14c outputs the sample solution (liquid) to the analyzer 3 as an analysis liquid.

[0205] The controller 12 then controls the operation of the outlet valve 15c and the gas inlet valve 15e.

[0206] Next, the outlet valve 15c and the gas introduction valve 15e are closed.

[0207] Next, the operation of the system 1 proceeds (returns) to the operation shown in Fig. 3. Thereafter, the system 1 repeats the operations shown in Figs. 3-5, 14, and 15.

[0208] ●Summary● As described above, the present system 1 includes the sampling container 11, the control device 12, the pressure reducing device 13, the connecting pipe 14a, the inlet flow path 14b, the outlet flow path 14c, the gas inlet flow path 14e, the pressure reducing valve 15a, the inlet valve 15b, the outlet valve 15c, and the gas inlet valve 15e. The control device 12 controls the operation of each on-off valve, so that the sample solution is introduced into the decompressed inside of the sampling container 11, and is discharged toward the analyzer 3 with the gas introduced into the inside of the sampling container 11. That is, the present system 1 realizes sampling of the sample solution (liquid) and discharge of the sample solution (analysis liquid) to the analyzer 3, by the control device 12 controlling the operation of each on-off valve. Therefore, there is no restriction on the arrangement position of the present system 1 with respect to the path through which the sample solution flows.

[0209] Also, as described above, the present system 1 includes a discharge channel 14d, a dissolution solvent introduction channel 14g, a discharge valve 15d, and a dissolution solvent introduction valve 15g. The sample solution contains a liquid and a solid (slurry solution). The sampling container 11 includes a separation filter 111 that separates the liquid and the solid. By controlling the operation of each on-off valve by the control device 12, the solid contained in the sample solution is separated (filtered) by the separation filter 111 and dissolved in the dissolution solvent introduced into the interior of the sampling container 11. The generated liquid generated by dissolving the solid in the dissolution solvent is led to the analyzer 3 as an analysis liquid. That is, the present system 1 realizes sampling (introduction) of the sample solution (slurry solution), generation of the generated liquid (analysis liquid), and derivation of the analysis liquid to the analyzer 3 by the control device 12 controlling the operation of each on-off valve.

[0210] Furthermore, as described above, the present system 1 includes a second gas introduction channel 14f and a second gas introduction valve 15f. The present system 1 introduces gas into the dissolution solvent by the control device 12 controlling the operation of the second gas introduction valve 15f. As a result, the present system 1 generates bubbles (bubbling) in the dissolution solvent by the introduced gas and stirs the dissolution solvent. That is, the dissolution of the solid in the dissolution solvent is promoted.

[0211] Here, in the above description, the sampling container 11 included the separation filter 111 and the bubbling filter 112. However, the sampling container in the present invention may include only one of the separation filter and the bubbling filter. That is, for example, the sampling container in the present invention includes only the separation filter. At this time, the separation filter also functions as a bubbling filter.

[0212] ●Features of the Present System and the Present Method● The features of the present system and the present method described so far are summarized and described below.

[0213] ●Features of the Present System This system (e.g., this system 1) is a sampling system for sampling a sample solution (e.g., the solution flowing through the sample solution path 2) to be analyzed by an analyzer (e.g., analyzer 3), a sampling container (e.g., sampling container 11) for storing the sample solution, an introduction flow path (e.g., introduction flow path 14b) for introducing the sample solution into the interior of the sampling container, a derivation flow path (e.g., derivation flow path 14c) for deriving, as an analysis solution, the sample solution or a generated solution generated inside the sampling container based on the sample solution, to the analyzer, a decompression device (e.g., decompression device 13) for decompressing the interior of the sampling container, a connection pipe (e.g., connection pipe 14a) connected to the sampling container and the decompression device, a gas introduction flow path (e.g., gas introduction flow path 14e) for introducing a gas (e.g., nitrogen gas) into the interior of the sampling container, an introduction valve (e.g., introduction valve 15b) for opening and closing the introduction flow path, a derivation valve (e.g., derivation valve 15c) for opening and closing the derivation flow path, a decompression valve (e.g., decompression valve 15a) for opening and closing the connection pipe, a gas introduction valve (e.g., gas introduction valve 15e) for opening and closing the gas introduction flow path, a control device (e.g., control device 12) for controlling the operations of the introduction valve, the derivation valve, the decompression valve, and the gas introduction valve, and is characterized in that the control device controls the operation of the decompression valve to decompress the interior of the sampling container, controls the operation of the introduction valve to introduce the sample solution into the decompressed interior of the sampling container, controls the operations of the derivation valve and the gas introduction valve to derive the analysis solution stored in the sampling container to the derivation flow path with the gas introduced into the interior of the sampling container, which is characterized by the above.

[0214] In this system, the sample solution contains a liquid and a solid (for example, a slurry solution), and includes a discharge channel (for example, discharge channel 14d) for discharging the liquid from the sampling container, a solvent introduction channel for dissolving the solid (for example, dimethylformamide) for introducing the solvent for dissolving into the inside of the sampling container (for example, solvent introduction channel 14g), a discharge valve (for example, discharge valve 15d) for opening and closing the discharge channel, a solvent introduction valve for opening and closing the solvent introduction channel for dissolving (for example, solvent introduction valve 15g), and has the sampling container is provided with a separation filter (for example, separation filter 111) for separating the liquid and the solid, and includes the control device controls the operation of the discharge valve to discharge the liquid separated by the separation filter into the discharge channel, controls the operation of the pressure reducing valve to reduce the pressure inside the sampling container, controls the operation of the solvent introduction valve for dissolving to introduce the solvent for dissolving into the decompressed inside of the sampling container, dissolves the solid separated by the separation filter with the solvent for dissolving to generate the generated liquid, and may be such.

[0215] This system has a second gas introduction channel (for example, second gas introduction valve 15f) for introducing the gas into the inside of the sampling container, a second gas introduction valve (for example, second gas introduction channel 14f) for opening and closing the second gas introduction channel, and has the control device Control the operation of the second gas introduction valve to introduce the gas into the solvent for dissolution introduced into the sampling container. It may be.

[0216] In this system, The gas from the second gas introduction channel is introduced into the sampling container from below the separation filter. It may be.

[0217] In this system, The sampling container A bubbling filter (for example, bubbling filter 112) through which the gas from the second gas introduction channel passes, is provided with The bubbling filter is disposed below the separation filter, The gas from the second gas introduction channel is introduced into the sampling container from below the bubbling filter. It may be.

[0218] This system A cleaning solvent introduction channel (for example, cleaning solvent introduction channel 14h) for introducing a cleaning solvent (for example, acetone) for cleaning the sampling container into the sampling container, A cleaning solvent introduction valve (for example, cleaning solvent introduction valve 15h) for opening and closing the cleaning solvent introduction channel, and has After the analysis solution is derived, the control device Controls the operation of the pressure reducing valve to reduce the pressure inside the sampling container, Controls the operation of the cleaning solvent introduction valve to introduce the cleaning solvent into the depressurized sampling container, Controls the operation of the discharge valve to discharge the cleaning solvent introduced into the sampling container to the discharge channel. It may be.

[0219] ●Features of this method This method is a method executed by a sampling system (for example, this system 1) that samples a sample solution (for example, the solution flowing through the sample solution path 2) to be analyzed by an analyzer (for example, analyzer 3), wherein the sampling system includes a sampling container (for example, sampling container 11) for storing the sample solution, an introduction flow path (for example, introduction flow path 14b) for introducing the sample solution into the interior of the sampling container, a derivation flow path (for example, derivation flow path 14c) for deriving the sample solution or a generated liquid generated inside the sampling container based on the sample solution as an analysis liquid to the analyzer, a decompression device (for example, decompression device 13) for decompressing the interior of the sampling container, a connection pipe (for example, connection pipe 14a) connected to the sampling container and the decompression device, a gas introduction flow path (for example, gas introduction flow path 14e) for introducing a gas (for example, nitrogen gas) into the interior of the sampling container, an introduction valve (for example, introduction valve 15b) for opening and closing the introduction flow path, a derivation valve (for example, derivation valve 15c) for opening and closing the derivation flow path, a decompression valve (for example, decompression valve 15a) for opening and closing the connection pipe, a gas introduction valve (for example, gas introduction valve 15e) for opening and closing the gas introduction flow path, and a control device (for example, control device 12) for controlling the operations of the introduction valve, the derivation valve, the decompression valve, and the gas introduction valve, and includes wherein the method includes a decompression step in which the control device controls the operation of the decompression valve to decompress the interior of the sampling container, an introduction step in which the control device controls the operation of the introduction valve to introduce the sample solution into the decompressed interior of the sampling container, The control device controls the operations of the discharge valve and the gas introduction valve to discharge the analysis liquid stored in the sampling container to the discharge flow path with the gas introduced into the interior of the sampling container. This is a discharging step. It is characterized by comprising this.

Explanation of Signs

[0220] 1 Sampling system 11 Sampling container 111 Separation filter 112 Bubbling filter 12 Control device 13 Pressure reducing device 14a Connecting pipe 14b Introduction flow path 14c Discharge flow path 14d Exhaust flow path 14e Gas introduction flow path 14f Second gas introduction flow path 14g Dissolving solvent introduction flow path 14h Cleaning solvent introduction flow path 14i Gas exhaust flow path 15a Pressure reducing valve 15b Introduction valve 15c Discharge valve 15d Exhaust valve 15e Gas introduction valve 15f Second gas introduction valve 15g Dissolving solvent introduction valve 15h Cleaning solvent introduction valve 15i Gas exhaust valve 2 Sample solution path 3 Analyzer 4 Gas path 5 Dissolving solvent tank 6 Cleaning solvent tank

Claims

1. A sampling system for sampling a sample solution to be analyzed by an analyzer, comprising: a sampling container for storing the sample solution; an introduction channel for introducing the sample solution into the interior of the sampling container; a derivation channel for deriving, as an analysis solution, the sample solution or a generated solution generated inside the sampling container based on the sample solution, to the analyzer; a decompression device for decompressing the interior of the sampling container; a connecting pipe connected to the sampling container and the decompression device; a gas introduction channel for introducing gas into the interior of the sampling container; an introduction valve for opening and closing the introduction channel; a derivation valve for opening and closing the derivation channel; a decompression valve for opening and closing the connecting pipe; a gas introduction valve for opening and closing the gas introduction channel; a control device for controlling the operations of the introduction valve, the derivation valve, the decompression valve, and the gas introduction valve; characterized by the control device controlling the operation of the decompression valve to decompress the interior of the sampling container; controlling the operation of the introduction valve to introduce the sample solution into the decompressed interior of the sampling container; controlling the operations of the derivation valve and the gas introduction valve to derive the analysis solution stored in the sampling container to the derivation channel with the gas introduced into the interior of the sampling container; a sampling system.

2. The sample solution contains a liquid and a solid, and further comprises a discharge channel for discharging the liquid from the sampling container; a dissolution solvent introduction channel for introducing a dissolution solvent for dissolving the solid into the interior of the sampling container; a discharge valve for opening and closing the discharge channel; a dissolution solvent introduction valve for opening and closing the dissolution solvent introduction channel; characterized by the sampling container being provided with a separation filter for separating the liquid and the solid; and the control device controlling the operation of the discharge valve to discharge the liquid separated by the separation filter to the discharge channel; controlling the operation of the decompression valve to decompress the interior of the sampling container; controlling the operation of the dissolution solvent introduction valve to introduce the dissolution solvent into the decompressed interior of the sampling container; dissolving the solid separated by the separation filter with the dissolution solvent to generate the generated solution; The sampling system according to Claim 1.

3. a second gas introduction channel for introducing the gas into the interior of the sampling container; A second gas introduction valve for opening and closing the second gas introduction channel, comprises, The control device, controls the operation of the second gas introduction valve to introduce the gas into the solvent for dissolution introduced into the inside of the sampling container, The sampling system according to claim 2.

4. The gas from the second gas introduction channel is introduced into the inside of the sampling container from below the separation filter, The sampling system according to claim 3.

5. The sampling container, a bubbling filter through which the gas from the second gas introduction channel passes, comprises, The bubbling filter is disposed below the separation filter, The gas from the second gas introduction channel is introduced into the inside of the sampling container from below the bubbling filter, The sampling system according to claim 4.

6. A cleaning solvent introduction channel for introducing a cleaning solvent for cleaning the sampling container into the inside of the sampling container, a cleaning solvent introduction valve for opening and closing the cleaning solvent introduction channel, comprises, After the analysis liquid is derived, the control device, controls the operation of the pressure reducing valve to reduce the pressure inside the sampling container, controls the operation of the cleaning solvent introduction valve to introduce the cleaning solvent into the inside of the pressure-reduced sampling container, controls the operation of the discharge valve to discharge the cleaning solvent introduced into the inside of the sampling container to the discharge channel, The sampling system according to claim 2.

7. A method executed by a sampling system for sampling a sample solution to be analyzed by an analyzer, The sampling system, a sampling container for storing the sample solution, an introduction channel for introducing the sample solution into the inside of the sampling container, a derivation channel for deriving, as an analysis liquid, the sample solution or a generated liquid generated inside the sampling container based on the sample solution, to the analyzer, a pressure reducing device for reducing the pressure inside the sampling container, a connection pipe connected to the sampling container and the pressure reducing device, a gas introduction channel for introducing gas into the inside of the sampling container, an introduction valve for opening and closing the introduction channel, a derivation valve for opening and closing the derivation channel, a pressure reducing valve for opening and closing the connection pipe, a gas introduction valve for opening and closing the gas introduction channel, A control device that controls the operations of the introduction valve, the discharge valve, the pressure reducing valve, and the gas introduction valve; is provided with; The method includes: a pressure reducing step in which the control device controls the operation of the pressure reducing valve to reduce the pressure inside the sampling container; an introduction step in which the control device controls the operation of the introduction valve to introduce the sample solution into the pressure-reduced inside of the sampling container; a discharge step in which the control device controls the operations of the discharge valve and the gas introduction valve to discharge the analysis solution stored in the sampling container to the discharge flow path with the gas introduced into the inside of the sampling container; characterized by comprising; a sampling method.

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